PhoneGap

Recently I have discovered a way to create Android and iOS apps without prior Java or Objective-C knowledge. In fact, there is a whole community around that concept with two preferred tools: Apache Cordova and PhoneGap (built on top of Cordova). Basically, these tools let you run HTML, CSS and Javascript code as native app.

To get started, read PhoneGap documentation:
http://docs.phonegap.com/

Here's an article that proved to be useful:
http://www.tricedesigns.com/2013/01/18/my-workflow-for-developing-phonegap-applications/